学术报告RoutingProtocolsinWSNs:ASurvey2012-09-13紫泉1897:QQ562687381Routing:DeliveringDataPacketsfromtheSourcetoDestinationTrafficPatternsinWSNs特点1:非对称特点2:种类多FactorsaffectingtheRoutingProtocolsDesignNodeDeploymentConnectivityNode/LinkHeterogeneityDataReportingModelScalabilityNetworkDynamicsFaultToleranceCoverageQualityofServiceDataAggregationCriteriausedtoevaluatetheperformanceofRoutingprotocolsEnergyConsumptionNetworkLifetimeDelayReliabilityClassificationofRoutingProtocols平面协议分层协议基于查询的基于相关性的基于协商的基于定位的基于移动代理的多路径基于QoSFlatNetworkRoutingProtocolRe-active(orOn-Demand)Pro-active(orTable-Driver)HybridAllthenodesinthenetworkplaythesameroleFloodingandGossipingFloodingGossipingFlatNetworkRoutingProtocolRe-active(orOn-Demand)Pro-active(orTable-Driver)HybridDirectedDiffusionStep1InterestpropagationStep2PathsetupStep3PathreinforceFlatNetworkRoutingProtocolRe-active(orOn-Demand)Pro-active(orTable-Driver)HybridRumorRoutingHierarchicalRoutingProtocolsLEACHanditsextensionOthers?节点属于不同的层次,功能也有差异TTDD解决多个sink和sink移动的问题基于查询基于相关性汇聚点广播查询请求,与请求匹配的节点向汇聚点发送数据。源节点将数据包发往融合节点,融合后再发往汇聚点。基于协商源节点使用元数据和邻居节点协商,只有邻居节点需要数据时才发送。DirectedDiffusionStep1InterestpropagationStep2GradientsetupStep3PathreinforceDataAggregationTreeNegotiation-BasedS1S用包含抽象的元数据的ADV消息向邻居通告2需要数据的邻居用REQ消息提出请求3S通过DATA消息将数据发送给请求节点SS基于定位基于移动代理???假定节点能够获得自己的精确地理位置。将地理位置信息作为路由决策的重要依据。基于多路径基于QoS面向实时性要求高的应用,在追求能量高效的同时,减少路由的时延面向可靠性要求高的应用,提供多条路径确保路由的健壮性。FutureWorksEnergyBalancedNetworkNetworkSecurityNodesMobilityReal-TimeApplicationandQoSCross-LayerDesign